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        <h1 id="1-macOS-编译-OpenJDK"><a href="#1-macOS-编译-OpenJDK" class="headerlink" title="1 macOS 编译 OpenJDK"></a>1 macOS 编译 OpenJDK</h1><p>目标：编译 OpenJDK17</p>
<h2 id="1-1-准备编译环境"><a href="#1-1-准备编译环境" class="headerlink" title="1.1 准备编译环境"></a>1.1 准备编译环境</h2><ol>
<li>首先去应用商店安装 <code>xcode.app</code></li>
<li>安装 <code>JDK16</code>（比要编译的JDK低一个版本，如要编译的openjdk17,那就安装jdk16）</li>
<li><code>brew install freetype ccache</code></li>
</ol>
<span id="more"></span>

<h2 id="1-2-开始编译"><a href="#1-2-开始编译" class="headerlink" title="1.2 开始编译"></a>1.2 开始编译</h2><h3 id="1-2-1-bash-configure"><a href="#1-2-1-bash-configure" class="headerlink" title="1.2.1 bash configure"></a>1.2.1 bash configure</h3><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">bash configure --with-debug-level=slowdebug --enable-dtrace --with-jvm-variants=server --with-target-bits=64 --with-num-cores=8 --with-memory-size=8000 --disable-warnings-as-errors</span><br></pre></td></tr></table></figure>

<p>参数说明：</p>
<ul>
<li>–with-debug-level=slowdebug 启用slowdebug级别调试</li>
<li>–enable-dtrace 启用dtrace</li>
<li>–with-jvm-variants=server 编译server类型JVM</li>
<li>–with-target-bits=64 指定JVM为64位</li>
<li>–enable-ccache 启用ccache，加快编译（因为在安装 ccache 的时候，总是失败，所以就没有带上这个参数）</li>
<li>–with-num-cores=8 编译使用CPU核心数</li>
<li>–with-memory-size=8000 编译使用内存</li>
<li>–disable-warnings-as-errors 忽略警告</li>
</ul>
<p>结果如下：</p>
<p><img src="https://gitee.com/littlefxc/oss/raw/master/images/image-20210706183317055.png" alt="image-20210706183317055"></p>
<h3 id="1-2-2-make-images"><a href="#1-2-2-make-images" class="headerlink" title="1.2.2 make images"></a>1.2.2 make images</h3><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">make images</span><br></pre></td></tr></table></figure>

<p>结果如下：</p>
<p><img src="https://gitee.com/littlefxc/oss/raw/master/images/image-20210706190102890.png" alt="image-20210706190102890"></p>
<p>1.2.3 验证</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">./build/*/images/jdk/bin/java -version</span><br></pre></td></tr></table></figure>

<p>结果如下：</p>
<p><img src="https://gitee.com/littlefxc/oss/raw/master/images/image-20210706190321790.png" alt="image-20210706190321790"></p>
<h2 id="1-3-FAQ"><a href="#1-3-FAQ" class="headerlink" title="1.3 FAQ"></a>1.3 FAQ</h2><ol>
<li>没有安装 <code>xcode.app</code></li>
</ol>
<p><img src="https://gitee.com/littlefxc/oss/raw/master/images/1460000020736821.png" alt="img"></p>
<p>解决办法：去应用商店安装</p>
<ol start="2">
<li><p>如何完全移除编译包</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">make print-configuration &gt; current-configuration</span><br><span class="line">make dist-clean</span><br><span class="line">bash configure $(cat current-configuration)</span><br><span class="line">make</span><br></pre></td></tr></table></figure></li>
<li></li>
</ol>

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